/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:07:15,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:07:15,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:07:15,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:07:15,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:07:15,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:07:15,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:07:15,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:07:15,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:07:15,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:07:15,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:07:15,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:07:15,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:07:15,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:07:15,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:07:15,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:07:15,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:07:15,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:07:15,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:07:15,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:07:15,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:07:15,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:07:15,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:07:15,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:07:15,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:07:15,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:07:15,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:07:15,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:07:15,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:07:15,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:07:15,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:07:15,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:07:15,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:07:15,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:07:15,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:07:15,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:07:15,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:07:15,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:07:15,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:07:15,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:07:15,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:07:15,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:07:15,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:07:15,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:07:15,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:07:15,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:07:15,485 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:07:15,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:07:15,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:07:15,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:07:15,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:07:15,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:07:15,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:07:15,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:07:15,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:07:15,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:07:15,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:07:15,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:07:15,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:07:15,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:07:15,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:07:15,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:07:15,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:07:15,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:07:15,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:07:15,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:07:15,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:07:15,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:07:15,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:07:15,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:07:15,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:07:15,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:07:15,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:07:15,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:07:15,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:07:15,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:07:15,943 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:07:15,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 00:07:16,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa522ee35/d907e8092379472c990ff233d173e982/FLAG7bd9a3427 [2020-10-28 00:07:16,776 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:07:16,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 00:07:16,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa522ee35/d907e8092379472c990ff233d173e982/FLAG7bd9a3427 [2020-10-28 00:07:16,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa522ee35/d907e8092379472c990ff233d173e982 [2020-10-28 00:07:16,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:07:16,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:07:16,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:07:16,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:07:16,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:07:16,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:07:16" (1/1) ... [2020-10-28 00:07:16,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c786d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:16, skipping insertion in model container [2020-10-28 00:07:16,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:07:16" (1/1) ... [2020-10-28 00:07:16,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:07:17,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:07:17,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:07:17,774 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:07:18,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:07:18,181 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:07:18,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18 WrapperNode [2020-10-28 00:07:18,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:07:18,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:07:18,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:07:18,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:07:18,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18" (1/1) ... [2020-10-28 00:07:18,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18" (1/1) ... [2020-10-28 00:07:18,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18" (1/1) ... [2020-10-28 00:07:18,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18" (1/1) ... [2020-10-28 00:07:18,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18" (1/1) ... [2020-10-28 00:07:18,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18" (1/1) ... [2020-10-28 00:07:18,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18" (1/1) ... [2020-10-28 00:07:18,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:07:18,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:07:18,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:07:18,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:07:18,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:07:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:07:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:07:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:07:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:07:18,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:07:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:07:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:07:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:07:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:07:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:07:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:07:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:07:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:07:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:07:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:07:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:07:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:07:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:07:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:07:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:07:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:07:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:07:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:07:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:07:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:07:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:07:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:07:20,823 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:07:20,824 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:07:20,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:07:20 BoogieIcfgContainer [2020-10-28 00:07:20,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:07:20,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:07:20,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:07:20,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:07:20,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:07:16" (1/3) ... [2020-10-28 00:07:20,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e556d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:07:20, skipping insertion in model container [2020-10-28 00:07:20,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:07:18" (2/3) ... [2020-10-28 00:07:20,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e556d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:07:20, skipping insertion in model container [2020-10-28 00:07:20,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:07:20" (3/3) ... [2020-10-28 00:07:20,837 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 00:07:20,850 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:07:20,856 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:07:20,870 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:07:20,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:07:20,917 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:07:20,920 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:07:20,920 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:07:20,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:07:20,921 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:07:20,921 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:07:20,921 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:07:20,995 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states. [2020-10-28 00:07:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 00:07:21,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:21,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:07:21,026 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:21,041 INFO L82 PathProgramCache]: Analyzing trace with hash 973982076, now seen corresponding path program 1 times [2020-10-28 00:07:21,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:21,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932757028] [2020-10-28 00:07:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:21,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:21,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:22,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:23,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:25,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:26,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:26,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:26,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 00:07:26,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:07:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-28 00:07:26,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:07:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:07:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:07:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:07:27,493 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:07:27,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:27,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:27,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:27,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:27,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:27,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 00:07:27,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:27,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:27,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:27,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:27,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:07:27,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932757028] [2020-10-28 00:07:27,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:27,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:07:27,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24972910] [2020-10-28 00:07:27,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:07:27,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:27,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:07:27,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:07:27,620 INFO L87 Difference]: Start difference. First operand 466 states. Second operand 9 states. [2020-10-28 00:07:28,374 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:07:33,713 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:07:36,839 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:07:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:36,984 INFO L93 Difference]: Finished difference Result 1023 states and 1723 transitions. [2020-10-28 00:07:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:07:36,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-28 00:07:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:37,024 INFO L225 Difference]: With dead ends: 1023 [2020-10-28 00:07:37,025 INFO L226 Difference]: Without dead ends: 886 [2020-10-28 00:07:37,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2020-10-28 00:07:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-10-28 00:07:37,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 498. [2020-10-28 00:07:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-10-28 00:07:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 647 transitions. [2020-10-28 00:07:37,129 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 647 transitions. Word has length 56 [2020-10-28 00:07:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:37,130 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 647 transitions. [2020-10-28 00:07:37,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:07:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 647 transitions. [2020-10-28 00:07:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 00:07:37,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:37,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:07:37,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:07:37,136 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1637126041, now seen corresponding path program 1 times [2020-10-28 00:07:37,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:37,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554768279] [2020-10-28 00:07:37,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:39,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:42,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:42,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 00:07:42,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:07:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:07:42,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:07:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 00:07:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 00:07:42,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:43,017 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:07:43,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:43,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:43,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:43,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:43,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:07:43,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:07:43,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554768279] [2020-10-28 00:07:43,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:43,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:07:43,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223751303] [2020-10-28 00:07:43,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:07:43,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:43,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:07:43,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:07:43,082 INFO L87 Difference]: Start difference. First operand 498 states and 647 transitions. Second operand 4 states. [2020-10-28 00:07:43,779 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:07:46,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:46,112 INFO L93 Difference]: Finished difference Result 767 states and 1031 transitions. [2020-10-28 00:07:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:07:46,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-28 00:07:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:46,119 INFO L225 Difference]: With dead ends: 767 [2020-10-28 00:07:46,119 INFO L226 Difference]: Without dead ends: 624 [2020-10-28 00:07:46,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:07:46,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-10-28 00:07:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 618. [2020-10-28 00:07:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-28 00:07:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 818 transitions. [2020-10-28 00:07:46,167 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 818 transitions. Word has length 56 [2020-10-28 00:07:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:46,167 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 818 transitions. [2020-10-28 00:07:46,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:07:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 818 transitions. [2020-10-28 00:07:46,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 00:07:46,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:46,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:07:46,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:07:46,173 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:46,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:46,175 INFO L82 PathProgramCache]: Analyzing trace with hash -135593810, now seen corresponding path program 1 times [2020-10-28 00:07:46,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:46,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642777480] [2020-10-28 00:07:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:46,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:46,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:46,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:47,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:51,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:51,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 00:07:51,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:07:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:07:51,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:07:51,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:07:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:07:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:51,945 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:07:51,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:51,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:51,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:51,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:07:51,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:51,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:51,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:07:51,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642777480] [2020-10-28 00:07:51,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:51,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:07:51,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998920411] [2020-10-28 00:07:51,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:07:51,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:51,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:07:51,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:07:51,999 INFO L87 Difference]: Start difference. First operand 618 states and 818 transitions. Second operand 7 states. [2020-10-28 00:07:52,740 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:07:55,025 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:07:55,760 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:07:56,447 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:07:57,163 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:07:58,875 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:07:59,575 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 00:08:00,319 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:08:01,254 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:08:01,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:08:01,323 INFO L93 Difference]: Finished difference Result 2279 states and 3235 transitions. [2020-10-28 00:08:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:08:01,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-28 00:08:01,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:08:01,333 INFO L225 Difference]: With dead ends: 2279 [2020-10-28 00:08:01,333 INFO L226 Difference]: Without dead ends: 1848 [2020-10-28 00:08:01,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-28 00:08:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-10-28 00:08:01,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1432. [2020-10-28 00:08:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1432 states. [2020-10-28 00:08:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2020 transitions. [2020-10-28 00:08:01,435 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2020 transitions. Word has length 56 [2020-10-28 00:08:01,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:08:01,435 INFO L481 AbstractCegarLoop]: Abstraction has 1432 states and 2020 transitions. [2020-10-28 00:08:01,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:08:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2020 transitions. [2020-10-28 00:08:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 00:08:01,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:08:01,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:08:01,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:08:01,438 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:08:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:08:01,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1143292245, now seen corresponding path program 1 times [2020-10-28 00:08:01,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:08:01,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29669703] [2020-10-28 00:08:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:08:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:03,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:05,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:05,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:06,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:06,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 00:08:06,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:08:06,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:08:06,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:08:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:08:06,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 00:08:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:07,350 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:08:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:08:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:07,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:07,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:08:07,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:08:07,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:08:07,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:08:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:08:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:08:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:08:07,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29669703] [2020-10-28 00:08:07,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:08:07,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:08:07,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977690603] [2020-10-28 00:08:07,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:08:07,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:08:07,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:08:07,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:08:07,400 INFO L87 Difference]: Start difference. First operand 1432 states and 2020 transitions. Second operand 6 states. [2020-10-28 00:08:09,487 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:08:10,843 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:08:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:08:11,069 INFO L93 Difference]: Finished difference Result 4927 states and 7081 transitions. [2020-10-28 00:08:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:08:11,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-28 00:08:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:08:11,094 INFO L225 Difference]: With dead ends: 4927 [2020-10-28 00:08:11,095 INFO L226 Difference]: Without dead ends: 3794 [2020-10-28 00:08:11,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:08:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2020-10-28 00:08:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 1435. [2020-10-28 00:08:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1435 states. [2020-10-28 00:08:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 2019 transitions. [2020-10-28 00:08:11,236 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 2019 transitions. Word has length 56 [2020-10-28 00:08:11,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:08:11,236 INFO L481 AbstractCegarLoop]: Abstraction has 1435 states and 2019 transitions. [2020-10-28 00:08:11,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:08:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 2019 transitions. [2020-10-28 00:08:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 00:08:11,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:08:11,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:08:11,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:08:11,241 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:08:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:08:11,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2090707368, now seen corresponding path program 1 times [2020-10-28 00:08:11,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:08:11,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677800582] [2020-10-28 00:08:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:08:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:11,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:11,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:11,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:11,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:11,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:13,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:15,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:15,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:16,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:16,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 00:08:16,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:08:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:08:16,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:08:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 00:08:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 00:08:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:17,022 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:08:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:08:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:17,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:17,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:08:17,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:08:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:08:17,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:08:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:08:17,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:08:17,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:08:17,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677800582] [2020-10-28 00:08:17,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:08:17,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:08:17,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036522653] [2020-10-28 00:08:17,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:08:17,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:08:17,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:08:17,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:08:17,073 INFO L87 Difference]: Start difference. First operand 1435 states and 2019 transitions. Second operand 4 states. [2020-10-28 00:08:17,784 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:08:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:08:19,923 INFO L93 Difference]: Finished difference Result 3220 states and 4616 transitions. [2020-10-28 00:08:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:08:19,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-28 00:08:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:08:19,936 INFO L225 Difference]: With dead ends: 3220 [2020-10-28 00:08:19,936 INFO L226 Difference]: Without dead ends: 2261 [2020-10-28 00:08:19,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:08:19,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-28 00:08:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2241. [2020-10-28 00:08:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2241 states. [2020-10-28 00:08:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 3165 transitions. [2020-10-28 00:08:20,099 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 3165 transitions. Word has length 56 [2020-10-28 00:08:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:08:20,100 INFO L481 AbstractCegarLoop]: Abstraction has 2241 states and 3165 transitions. [2020-10-28 00:08:20,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:08:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 3165 transitions. [2020-10-28 00:08:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:08:20,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:08:20,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:08:20,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:08:20,103 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:08:20,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:08:20,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1216993236, now seen corresponding path program 1 times [2020-10-28 00:08:20,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:08:20,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357275666] [2020-10-28 00:08:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:08:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:20,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:20,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:20,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:22,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:22,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:23,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:25,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:25,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:08:25,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:08:25,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:08:25,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:25,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:08:25,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:08:25,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:08:25,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:26,041 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:08:26,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:08:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:26,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:26,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:08:26,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:08:26,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:08:26,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:26,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:08:26,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:08:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:08:26,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:08:26,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357275666] [2020-10-28 00:08:26,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:08:26,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:08:26,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513045164] [2020-10-28 00:08:26,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:08:26,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:08:26,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:08:26,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:08:26,104 INFO L87 Difference]: Start difference. First operand 2241 states and 3165 transitions. Second operand 6 states. [2020-10-28 00:08:28,251 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:08:29,938 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:08:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:08:30,313 INFO L93 Difference]: Finished difference Result 7358 states and 10619 transitions. [2020-10-28 00:08:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:08:30,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-28 00:08:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:08:30,342 INFO L225 Difference]: With dead ends: 7358 [2020-10-28 00:08:30,342 INFO L226 Difference]: Without dead ends: 5981 [2020-10-28 00:08:30,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:08:30,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2020-10-28 00:08:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 2228. [2020-10-28 00:08:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2020-10-28 00:08:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3127 transitions. [2020-10-28 00:08:30,578 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3127 transitions. Word has length 57 [2020-10-28 00:08:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:08:30,579 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 3127 transitions. [2020-10-28 00:08:30,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:08:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3127 transitions. [2020-10-28 00:08:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:08:30,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:08:30,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:08:30,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:08:30,581 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:08:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:08:30,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1911417059, now seen corresponding path program 1 times [2020-10-28 00:08:30,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:08:30,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924062277] [2020-10-28 00:08:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:08:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:30,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:30,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:30,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:30,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:31,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:35,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:35,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:08:35,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:08:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:08:35,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:08:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:08:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:08:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:36,298 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:08:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:08:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:36,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:36,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:08:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:08:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:08:36,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:08:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:08:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:08:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:08:36,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924062277] [2020-10-28 00:08:36,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:08:36,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:08:36,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930031796] [2020-10-28 00:08:36,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:08:36,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:08:36,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:08:36,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:08:36,346 INFO L87 Difference]: Start difference. First operand 2228 states and 3127 transitions. Second operand 6 states. [2020-10-28 00:08:37,044 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:08:39,390 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:08:40,168 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:08:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:08:42,368 INFO L93 Difference]: Finished difference Result 14912 states and 21591 transitions. [2020-10-28 00:08:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:08:42,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-28 00:08:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:08:42,428 INFO L225 Difference]: With dead ends: 14912 [2020-10-28 00:08:42,428 INFO L226 Difference]: Without dead ends: 12801 [2020-10-28 00:08:42,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:08:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12801 states. [2020-10-28 00:08:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12801 to 6983. [2020-10-28 00:08:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6983 states. [2020-10-28 00:08:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 9949 transitions. [2020-10-28 00:08:43,163 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 9949 transitions. Word has length 57 [2020-10-28 00:08:43,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:08:43,163 INFO L481 AbstractCegarLoop]: Abstraction has 6983 states and 9949 transitions. [2020-10-28 00:08:43,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:08:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 9949 transitions. [2020-10-28 00:08:43,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:08:43,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:08:43,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:08:43,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:08:43,169 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:08:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:08:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1760658741, now seen corresponding path program 1 times [2020-10-28 00:08:43,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:08:43,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673350202] [2020-10-28 00:08:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:08:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:43,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:43,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:43,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:45,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:46,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:48,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:48,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:08:48,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:08:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:08:48,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:08:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:08:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 00:08:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:48,980 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:08:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:08:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:48,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:49,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:08:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:08:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:08:49,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:08:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:08:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:08:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:08:49,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673350202] [2020-10-28 00:08:49,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:08:49,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:08:49,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606542558] [2020-10-28 00:08:49,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:08:49,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:08:49,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:08:49,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:08:49,030 INFO L87 Difference]: Start difference. First operand 6983 states and 9949 transitions. Second operand 9 states. [2020-10-28 00:08:49,735 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:08:51,996 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:08:53,870 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:08:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:08:55,270 INFO L93 Difference]: Finished difference Result 34882 states and 49769 transitions. [2020-10-28 00:08:55,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 00:08:55,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-28 00:08:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:08:55,340 INFO L225 Difference]: With dead ends: 34882 [2020-10-28 00:08:55,340 INFO L226 Difference]: Without dead ends: 29299 [2020-10-28 00:08:55,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 00:08:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29299 states. [2020-10-28 00:08:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29299 to 7062. [2020-10-28 00:08:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7062 states. [2020-10-28 00:08:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7062 states to 7062 states and 10036 transitions. [2020-10-28 00:08:56,295 INFO L78 Accepts]: Start accepts. Automaton has 7062 states and 10036 transitions. Word has length 57 [2020-10-28 00:08:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:08:56,296 INFO L481 AbstractCegarLoop]: Abstraction has 7062 states and 10036 transitions. [2020-10-28 00:08:56,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:08:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states and 10036 transitions. [2020-10-28 00:08:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 00:08:56,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:08:56,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:08:56,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:08:56,301 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:08:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:08:56,302 INFO L82 PathProgramCache]: Analyzing trace with hash -303164189, now seen corresponding path program 1 times [2020-10-28 00:08:56,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:08:56,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188809083] [2020-10-28 00:08:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:08:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:56,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:56,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:58,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:59,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:01,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 00:09:01,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:09:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:09:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:09:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 00:09:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:09:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:02,020 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:09:02,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:02,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:02,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:02,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:09:02,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:02,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188809083] [2020-10-28 00:09:02,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:02,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:09:02,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841138338] [2020-10-28 00:09:02,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:09:02,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:02,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:09:02,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:09:02,066 INFO L87 Difference]: Start difference. First operand 7062 states and 10036 transitions. Second operand 4 states. [2020-10-28 00:09:03,959 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:09:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:04,928 INFO L93 Difference]: Finished difference Result 14535 states and 20889 transitions. [2020-10-28 00:09:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:09:04,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 00:09:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:04,949 INFO L225 Difference]: With dead ends: 14535 [2020-10-28 00:09:04,950 INFO L226 Difference]: Without dead ends: 8939 [2020-10-28 00:09:04,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:09:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8939 states. [2020-10-28 00:09:05,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8939 to 8936. [2020-10-28 00:09:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8936 states. [2020-10-28 00:09:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8936 states to 8936 states and 12469 transitions. [2020-10-28 00:09:05,612 INFO L78 Accepts]: Start accepts. Automaton has 8936 states and 12469 transitions. Word has length 58 [2020-10-28 00:09:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:09:05,612 INFO L481 AbstractCegarLoop]: Abstraction has 8936 states and 12469 transitions. [2020-10-28 00:09:05,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:09:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 8936 states and 12469 transitions. [2020-10-28 00:09:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 00:09:05,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:05,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:09:05,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:09:05,617 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:05,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:05,618 INFO L82 PathProgramCache]: Analyzing trace with hash -63892203, now seen corresponding path program 1 times [2020-10-28 00:09:05,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:05,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602891032] [2020-10-28 00:09:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:05,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:06,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:06,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:10,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:10,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 00:09:10,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:09:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:09:10,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:09:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 00:09:10,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 00:09:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:11,328 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:09:11,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:11,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:11,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:11,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:11,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:11,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:09:11,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:11,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:11,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:11,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:11,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602891032] [2020-10-28 00:09:11,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:11,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:09:11,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001007676] [2020-10-28 00:09:11,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:09:11,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:11,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:09:11,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:09:11,367 INFO L87 Difference]: Start difference. First operand 8936 states and 12469 transitions. Second operand 4 states. [2020-10-28 00:09:12,185 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:09:14,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:14,715 INFO L93 Difference]: Finished difference Result 13809 states and 19362 transitions. [2020-10-28 00:09:14,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:09:14,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 00:09:14,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:14,735 INFO L225 Difference]: With dead ends: 13809 [2020-10-28 00:09:14,735 INFO L226 Difference]: Without dead ends: 8888 [2020-10-28 00:09:14,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:09:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8888 states. [2020-10-28 00:09:15,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8888 to 8852. [2020-10-28 00:09:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8852 states. [2020-10-28 00:09:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 12233 transitions. [2020-10-28 00:09:15,490 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 12233 transitions. Word has length 58 [2020-10-28 00:09:15,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:09:15,491 INFO L481 AbstractCegarLoop]: Abstraction has 8852 states and 12233 transitions. [2020-10-28 00:09:15,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:09:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 12233 transitions. [2020-10-28 00:09:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 00:09:15,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:15,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:09:15,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:09:15,496 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:15,496 INFO L82 PathProgramCache]: Analyzing trace with hash -335984155, now seen corresponding path program 1 times [2020-10-28 00:09:15,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:15,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958561087] [2020-10-28 00:09:15,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:15,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:15,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:15,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:16,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:16,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:17,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:17,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:19,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:20,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:20,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:20,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:20,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 00:09:20,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-28 00:09:20,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:09:20,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 00:09:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:09:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 00:09:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:21,379 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:09:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:21,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:21,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:21,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:21,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:09:21,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:21,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958561087] [2020-10-28 00:09:21,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:21,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 00:09:21,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842680173] [2020-10-28 00:09:21,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 00:09:21,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:21,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 00:09:21,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-28 00:09:21,414 INFO L87 Difference]: Start difference. First operand 8852 states and 12233 transitions. Second operand 10 states. [2020-10-28 00:09:22,118 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:09:24,544 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 00:09:27,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:27,530 INFO L93 Difference]: Finished difference Result 24865 states and 34932 transitions. [2020-10-28 00:09:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 00:09:27,531 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-28 00:09:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:27,576 INFO L225 Difference]: With dead ends: 24865 [2020-10-28 00:09:27,576 INFO L226 Difference]: Without dead ends: 23001 [2020-10-28 00:09:27,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-10-28 00:09:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23001 states. [2020-10-28 00:09:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23001 to 9748. [2020-10-28 00:09:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9748 states. [2020-10-28 00:09:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9748 states to 9748 states and 13529 transitions. [2020-10-28 00:09:28,892 INFO L78 Accepts]: Start accepts. Automaton has 9748 states and 13529 transitions. Word has length 59 [2020-10-28 00:09:28,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:09:28,892 INFO L481 AbstractCegarLoop]: Abstraction has 9748 states and 13529 transitions. [2020-10-28 00:09:28,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 00:09:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 9748 states and 13529 transitions. [2020-10-28 00:09:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 00:09:28,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:28,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:09:28,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:09:28,896 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:28,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1347875024, now seen corresponding path program 1 times [2020-10-28 00:09:28,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:28,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043700459] [2020-10-28 00:09:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:29,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:29,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:30,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:30,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:32,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:33,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:33,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:33,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 00:09:33,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:09:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:09:33,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:09:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:09:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 00:09:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:34,650 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:09:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:34,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:34,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:34,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:09:34,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:34,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043700459] [2020-10-28 00:09:34,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:34,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:09:34,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572152691] [2020-10-28 00:09:34,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:09:34,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:34,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:09:34,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:09:34,699 INFO L87 Difference]: Start difference. First operand 9748 states and 13529 transitions. Second operand 6 states. [2020-10-28 00:09:35,390 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:09:37,787 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:09:40,420 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:09:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:42,829 INFO L93 Difference]: Finished difference Result 36946 states and 52332 transitions. [2020-10-28 00:09:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:09:42,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-28 00:09:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:42,874 INFO L225 Difference]: With dead ends: 36946 [2020-10-28 00:09:42,874 INFO L226 Difference]: Without dead ends: 30992 [2020-10-28 00:09:42,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:09:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30992 states. [2020-10-28 00:09:44,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30992 to 16936. [2020-10-28 00:09:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16936 states. [2020-10-28 00:09:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16936 states to 16936 states and 23590 transitions. [2020-10-28 00:09:44,783 INFO L78 Accepts]: Start accepts. Automaton has 16936 states and 23590 transitions. Word has length 59 [2020-10-28 00:09:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:09:44,783 INFO L481 AbstractCegarLoop]: Abstraction has 16936 states and 23590 transitions. [2020-10-28 00:09:44,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:09:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 16936 states and 23590 transitions. [2020-10-28 00:09:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 00:09:44,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:44,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:09:44,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:09:44,787 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:44,789 INFO L82 PathProgramCache]: Analyzing trace with hash 286907341, now seen corresponding path program 1 times [2020-10-28 00:09:44,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:44,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941184160] [2020-10-28 00:09:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:44,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:44,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:45,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:47,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:47,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:48,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:49,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 00:09:49,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:09:49,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:09:49,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:49,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:09:49,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:09:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 00:09:49,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:50,593 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:09:50,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:50,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:50,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:50,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:50,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:09:50,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:50,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:50,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941184160] [2020-10-28 00:09:50,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:50,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:09:50,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094624435] [2020-10-28 00:09:50,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:09:50,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:50,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:09:50,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:09:50,628 INFO L87 Difference]: Start difference. First operand 16936 states and 23590 transitions. Second operand 9 states. [2020-10-28 00:09:51,400 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:09:53,689 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:09:56,283 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:10:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:01,125 INFO L93 Difference]: Finished difference Result 57098 states and 79954 transitions. [2020-10-28 00:10:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 00:10:01,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-28 00:10:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:01,205 INFO L225 Difference]: With dead ends: 57098 [2020-10-28 00:10:01,205 INFO L226 Difference]: Without dead ends: 52991 [2020-10-28 00:10:01,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 00:10:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52991 states. [2020-10-28 00:10:03,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52991 to 16944. [2020-10-28 00:10:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16944 states. [2020-10-28 00:10:03,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16944 states to 16944 states and 23602 transitions. [2020-10-28 00:10:03,210 INFO L78 Accepts]: Start accepts. Automaton has 16944 states and 23602 transitions. Word has length 59 [2020-10-28 00:10:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:03,210 INFO L481 AbstractCegarLoop]: Abstraction has 16944 states and 23602 transitions. [2020-10-28 00:10:03,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:10:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 16944 states and 23602 transitions. [2020-10-28 00:10:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 00:10:03,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:03,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:03,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:10:03,214 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:03,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:03,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1351031217, now seen corresponding path program 1 times [2020-10-28 00:10:03,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:03,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539246499] [2020-10-28 00:10:03,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:03,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:03,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:03,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:05,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:07,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:07,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:08,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:08,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 00:10:08,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-28 00:10:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 00:10:08,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 00:10:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:10:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 00:10:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:09,084 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:10:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:09,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:09,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:09,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:10:09,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:09,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539246499] [2020-10-28 00:10:09,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:09,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 00:10:09,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400469669] [2020-10-28 00:10:09,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 00:10:09,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:09,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 00:10:09,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 00:10:09,122 INFO L87 Difference]: Start difference. First operand 16944 states and 23602 transitions. Second operand 10 states. [2020-10-28 00:10:09,867 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:10:12,100 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 00:10:16,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:16,642 INFO L93 Difference]: Finished difference Result 41371 states and 58486 transitions. [2020-10-28 00:10:16,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 00:10:16,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-28 00:10:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:16,677 INFO L225 Difference]: With dead ends: 41371 [2020-10-28 00:10:16,677 INFO L226 Difference]: Without dead ends: 32611 [2020-10-28 00:10:16,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-28 00:10:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32611 states. [2020-10-28 00:10:18,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32611 to 16927. [2020-10-28 00:10:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16927 states. [2020-10-28 00:10:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16927 states to 16927 states and 23575 transitions. [2020-10-28 00:10:18,551 INFO L78 Accepts]: Start accepts. Automaton has 16927 states and 23575 transitions. Word has length 59 [2020-10-28 00:10:18,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:18,551 INFO L481 AbstractCegarLoop]: Abstraction has 16927 states and 23575 transitions. [2020-10-28 00:10:18,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 00:10:18,551 INFO L276 IsEmpty]: Start isEmpty. Operand 16927 states and 23575 transitions. [2020-10-28 00:10:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 00:10:18,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:18,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:18,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:10:18,555 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:18,556 INFO L82 PathProgramCache]: Analyzing trace with hash 290063534, now seen corresponding path program 1 times [2020-10-28 00:10:18,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:18,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561682744] [2020-10-28 00:10:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:18,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:18,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:18,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:19,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:19,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:19,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:21,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:23,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 00:10:23,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:10:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:10:23,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:10:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:10:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 00:10:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:24,273 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:10:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:24,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:24,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:24,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:10:24,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:24,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561682744] [2020-10-28 00:10:24,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:24,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:10:24,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041148754] [2020-10-28 00:10:24,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:10:24,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:24,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:10:24,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:10:24,311 INFO L87 Difference]: Start difference. First operand 16927 states and 23575 transitions. Second operand 6 states. [2020-10-28 00:10:25,005 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:10:27,283 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:10:29,797 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:10:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:34,792 INFO L93 Difference]: Finished difference Result 63032 states and 89689 transitions. [2020-10-28 00:10:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:10:34,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-28 00:10:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:34,858 INFO L225 Difference]: With dead ends: 63032 [2020-10-28 00:10:34,859 INFO L226 Difference]: Without dead ends: 51178 [2020-10-28 00:10:34,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:10:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51178 states. [2020-10-28 00:10:38,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51178 to 29474. [2020-10-28 00:10:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29474 states. [2020-10-28 00:10:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29474 states to 29474 states and 41467 transitions. [2020-10-28 00:10:38,480 INFO L78 Accepts]: Start accepts. Automaton has 29474 states and 41467 transitions. Word has length 59 [2020-10-28 00:10:38,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:38,480 INFO L481 AbstractCegarLoop]: Abstraction has 29474 states and 41467 transitions. [2020-10-28 00:10:38,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:10:38,480 INFO L276 IsEmpty]: Start isEmpty. Operand 29474 states and 41467 transitions. [2020-10-28 00:10:38,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 00:10:38,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:38,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:38,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:10:38,485 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:38,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:38,485 INFO L82 PathProgramCache]: Analyzing trace with hash -869159903, now seen corresponding path program 1 times [2020-10-28 00:10:38,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:38,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834918435] [2020-10-28 00:10:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:38,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:38,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:43,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:43,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 00:10:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:10:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-28 00:10:43,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 00:10:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:10:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 00:10:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:44,492 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:10:44,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:44,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:44,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:44,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:10:44,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:44,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834918435] [2020-10-28 00:10:44,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:44,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 00:10:44,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514622600] [2020-10-28 00:10:44,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 00:10:44,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:44,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 00:10:44,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:10:44,531 INFO L87 Difference]: Start difference. First operand 29474 states and 41467 transitions. Second operand 13 states. [2020-10-28 00:10:46,225 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 328 DAG size of output: 326 [2020-10-28 00:10:51,239 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 00:10:52,921 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 326 DAG size of output: 324 [2020-10-28 00:10:53,661 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2020-10-28 00:10:55,411 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 322 DAG size of output: 320 [2020-10-28 00:10:55,703 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 16